公开(公告)号：US5624978A

公开(公告)日：1997-04-29

申请号：US330474

申请日：1994-10-28

申请人： Jeffrey N. Soltwedel ,  Karl P. Anderson ,  Lori E. Witherup ,  Wendy M. Holtmann ,  John R. Sekerak

发明人： Jeffrey N. Soltwedel ,  Karl P. Anderson ,  Lori E. Witherup ,  Wendy M. Holtmann ,  John R. Sekerak

IPC分类号： C08K3/08 ,  C08K3/22 ,  C09D163/00 ,  C08K3/24

CPC分类号： C08K3/08 ,  C08K3/22 ,  C09D163/00

摘要： This invention relates to aqueous epoxy resin-containing compositions useful for depositing coatings on metallic substrates in order to protect substrates against corrosion. The aqueous compositions generally comprise (A) an organic resin component consisting essentially of at least one water-dispersible or emulsifiable epoxy resin; (B) a non-ionic emulsifier, (C) chromium trioxide, (D) a conductive pigment, (E) water, and, optionally, polytetrafluorethylene as a lubricant. The compositions may also contain phosphoric acid or an alkylphosphoric acid. These compositions are useful in coil coating operations to improve the electrocoatability of a metal substrate, in particular, steel, galvanized or aluminized substrates. The basecoated metal can then be conventionally coated or electro coated with weldable or non-weldable primer coatings and may be followed by the application of decorative topcoats. The invention also relates to metal substrates which have been coated with the pretreatment coating and, optionally, the weldable or non-weldable primer coatings.

摘要翻译： 本发明涉及含水环氧树脂的组合物，其用于在金属基材上沉积涂层，以保护基材免受腐蚀。 水性组合物通常包含（A）主要由至少一种水分散性或可乳化环氧树脂组成的有机树脂组分; （B）非离子乳化剂，（C）三氧化铬，（D）导电颜料，（E）水，以及任选的作为润滑剂的聚四氟乙烯。 组合物还可以含有磷酸或烷基磷酸。 这些组合物可用于线圈涂覆操作以改善金属基材，特别是钢，镀锌或镀铝基材的电涂层。 然后可以将基础涂层金属常规地涂覆或用可焊接或不可焊接的底漆涂覆电涂，并且随后应用装饰面漆。 本发明还涉及已经用预处理涂层涂覆的金属基材，以及任选的可焊接或不可焊接的底漆涂层。